Troubleshooting topic
If you find a bug or want a feature, but don't know how to fix/implement it, please fill an issue. If you fixed a bug or implemented a feature, please send a pull request.
Hot reload not affect immediately when use group feature.
If using ExpansionTileGroup, the hot reload will not immediately affect to UI of children in this group.
You should use the hot restart to see the changed. The reason why is the ExpansionTileGroup will auto generate GlobalKey for each item. With these keys group can easily control behaviors of items,
but it not good for hot reload, you know.
Adding border radius
When you want to add BorderRadius, please notice to the BorderSide of the box. The BorderRadius must has uniform borders.
You can check this post here uniform borders
Adding shadow to item box
When you want to add a shadow into an item box, you need to add the backgroundColor and collapsedBackgroundColor into the item, because they are using transparent by default.
Conditions between trailing, isHasTrailing, trailingIcon
- When 
isHasTrailingis setfalse, no need to definetrailing. - When 
trailingis set, no need to definetrailingIcon 
Libraries
- expansion_tile_group Get started Upgrading Item features Group features Troubleshooting
 - This package overcomes the limitations of the standard ExpansionTile widget by incorporating highly customizable widgets that fully 
extendsits functionality. These widgets can be seamlessly grouped and their interactions easily managed, offering you unparalleled control and flexibility.